@Ashley Rummage, I assume this extra 10% you have is over and above the 6 months emergency cash reserve you have to pay bills in the event the RE market slows and/or something were to happen to your husbands employment. If that is the case, when people ask me whether something is a good investment I always say compared to what. You did not say what the interest on your home loan is, but if your investment will earn you more than what you pay in interest that is what you should do.
I do a lot of short sales and investment properties. As far as having 20% in the home, that typically will not reduce your monthly payment (at this point). Any prepayment shortens the time of your loan though (i.e. may cut some payments off of the end...depends on your loan). Also, worst case, if you ever did have to short sell your house, the lender will be taking the hit, not you.
Same thing with the Kitchen upgrade. If you put money there now, and something were to happen, those are sunk costs. Better to make an investment, and let the proceeds of the investment help pay the kitchen renovation costs.
I understand you are doing a lot of reading, and there is a lot of free information you can get on BP. Some of your money could be spent on education. Before signing up with a guru, make sure you vet any program on BP.
Hope this helps, I'm happy to give more specific examples. Good luck